S. SINGH, S. S. BAWA, S. SINGH, and S. C. SHARMA, “Evaluation of maize (Zea mays) based intercropping for productivity, resource-use efficiency and competition indices in the rainfed foothills of northwest Himalayas”, Indian J Agri Sci, vol. 85, no. 5, pp. 614–621, May 2015, doi: 10.56093/ijas.v85i5.48431.